High-pressure filter resistant to heavy medium erosion

Abstract

The invention discloses a heavy medium erosion resistant high pressure filter, which comprises a central chamber and an adsorption filtration cavity arranged at the periphery of the central chamber, the adsorption filtration cavity is filled with ceramic balls, the central chamber is provided with an inlet and a drain outlet, the drain outlet is provided with a drain valve cover, and the drain valve cover is provided with a drain outlet. A porous ceramic filter layer and a secondary filter layer are arranged between the central chamber and the adsorption filter cavity; a plurality of tapered holes with small inside and large outside are formed in the porous ceramic filter layer; a plurality of liquid outlet pipes are further connected to the adsorption filtering cavity; the porous ceramic filter layer, the secondary filter layer and the ceramic balls are matched to realize multi-stage filtration treatment of black water, so that abrasion to pipelines and equipment in subsequent conveying is greatly reduced, meanwhile, the use amount of treatment agents such as a flocculating agent in a subsequent sewage sedimentation tank is also reduced, the cost is saved, and compared with a common filter, the filter has the advantages that the cost is reduced; the filter has the advantages of erosion resistance, corrosion resistance, high pressure resistance, high filtering efficiency, long service life, environmental protection, energy conservation and high adaptability, and is suitable for popularization and application.

Description

Technical Field

[0001] The invention relates to the field of sewage filtering equipment, and in particular to a high-pressure filter resistant to heavy medium erosion. Background Art

[0002] Black water is produced in coal chemical, petroleum, metallurgy and other industries. Taking coal chemical black water as an example, it mainly comes from the quenching chamber, carbon washing tower and slag pool. These places are in direct contact with high-temperature coal gas, so the discharged water contains a large amount of fine ash and impurities, so it presents a high turbidity, hence the name black water. The hard particles and impurities in the black water cause serious wear on the transportation pipeline, especially in high-pressure transportation, which can easily cause damage to the pipeline and equipment. It needs to be filtered before transportation, but in the actual production operation process, it is found that ordinary sewage filters cannot adapt to the harsh working conditions of black water filtration. Here, a filtering equipment specifically for heavy medium erosion resistance represented by black water is proposed. Summary of the invention

[0003] In view of the problems existing in the background technology, the purpose of the present invention is to provide a high-pressure filter resistant to heavy medium erosion, which effectively solves the problems existing in the background technology.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A high-pressure filter resistant to heavy medium erosion comprises a central chamber and an adsorption filter chamber arranged outside the central chamber, wherein the adsorption filter chamber is filled with ceramic balls, the central chamber has an inlet and a sewage outlet, a sewage outlet is provided with a sewage valve cover, a porous ceramic filter layer and a secondary filter layer are provided between the central chamber and the adsorption filter chamber, the porous ceramic filter layer has a plurality of tapered holes which are small inside and large outside; and a plurality of liquid outlet pipes are also connected to the adsorption filter chamber.

[0006] Furthermore, the secondary filter layer includes multiple layers of fiber cloth.

[0007] Furthermore, the outer ring of the porous ceramic filter layer has an annular groove, a clamping ring is provided in the annular groove, and the fiber cloth is tightly fixed by the annular groove and the clamping ring.

[0008] Furthermore, the fiber cloth is polyester fiber cloth.

[0009] Furthermore, the clamping ring is made of thermoplastic polyurethane.

[0010] Furthermore, a filter screen is provided at the inlet end of the liquid outlet pipe.

[0011] Furthermore, the central chamber is tubular, the adsorption and filtration chamber is annular and coaxially arranged outside the central chamber, and the multiple liquid outlet pipes are evenly distributed along the circumference of the cross section of the adsorption and filtration chamber.

[0012] The present invention has the following beneficial technical effects:

[0013] The present invention realizes multi-stage filtration treatment of black water through the combination of porous ceramic filter layer, secondary filter layer and ceramic balls, which greatly reduces the wear of pipelines and equipment in subsequent transportation, and also reduces the use of flocculants and other treatment agents in subsequent sewage sedimentation tanks, saving treatment costs. Compared with ordinary filters, the present application has the advantages of erosion resistance, corrosion resistance, high pressure resistance, high filtration efficiency, long service life, environmental protection and energy saving, and strong adaptability, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A longitudinal sectional schematic diagram of an embodiment of the present invention;

[0015] Figure 2 It is a schematic cross-sectional view of the adsorption filter cavity, the central cavity and the assembly structure in an embodiment of the present invention;

[0016] Figure 3 Schematic diagram of the assembly structure of the secondary filter layer and the porous ceramic filter layer in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] like Figure 1-3As shown, a high-pressure filter resistant to heavy medium erosion described in this embodiment includes a central chamber 1 and an adsorption filter chamber 2 arranged outside the central chamber 1, the adsorption filter chamber 2 is filled with ceramic balls 3, the particle sizes of the ceramic balls 3 are the same or different, the central chamber 1 has an inlet 4 and a drain port 5, and a drain valve cover (not shown) is provided at the drain port 5, and the drain valve cover can be opened manually to clean the impurities trapped in the central chamber 1;

[0020] A porous ceramic filter layer 6 and a secondary filter layer are arranged between the central chamber 1 and the adsorption filter chamber 2. The porous ceramic filter layer 6 is tubular, and its inner space is the central chamber 1. The porous ceramic filter layer 6 has a plurality of tapered holes 7 which are small inside and large outside, allowing part of the black water to flow directly through and reducing resistance. The materials of the above-mentioned porous ceramic filter layer 6 and ceramic balls 3 are both alumina ceramics. The porous ceramic filter layer 6 has extremely high wear resistance and good erosion resistance, can effectively resist the erosion and wear of hard particles in black water, and can operate for a long time under extreme working conditions. In addition, the porous ceramic filter layer 6 and ceramic balls 3 also have good acid and alkali resistance, and can ensure the integrity and stability of the structure even under corrosive working conditions for a long time.

[0021] The adsorption filter chamber 2 is also connected to a plurality of liquid outlet pipes 8. The adsorption filter chamber 2 is annular and coaxially arranged outside the central chamber 1. The plurality of liquid outlet pipes 8 are evenly distributed circumferentially along the cross-section of the adsorption filter chamber 2. Specifically, a shell 9 is provided outside the porous ceramic filter layer 6. The shell 9 has an annular cavity, i.e., the above-mentioned adsorption filter chamber 2. The liquid outlet pipe 8 is fixed on the shell 9. A filter screen 10 is provided at the inlet end of the liquid outlet pipe 8 to prevent the ceramic balls 3 and other large-size impurities from entering the liquid outlet pipe 8. The filter screen 10 is a metal filter screen, and the mesh size is selected according to the process requirements.

[0022] The secondary filter layer includes multiple layers of fiber cloth 11, which is polyester fiber cloth. The outer circle of the porous ceramic filter layer 6 has an annular groove 12. There are at least two annular grooves 12, which are respectively close to the head and tail ends of the porous ceramic filter layer 6. A clamping ring 13 is arranged in the annular groove 12. The fiber cloth 11 is tightly fixed by the annular groove 12 and the clamping ring 13. The material of the clamping ring 13 is thermoplastic polyurethane.

[0023] The working principle of this embodiment is:

[0024] Black water enters the central chamber 1 from the inlet 4 and then passes through the porous ceramic filter layer 6 and the secondary filter layer in turn before entering the adsorption filter chamber 2. When passing through the porous ceramic filter layer 6, most of the large particles of solid matter are retained in the central chamber 1. When passing through the secondary filter layer, most of the solid matter is retained. The liquid after the initial filtration enters the adsorption filter chamber 2, and then passes through the ceramic ball 3 for adsorption and filtration to obtain a relatively clean liquid that enters the liquid outlet pipe 8 and is then discharged to subsequent delivery pipelines and equipment. In this embodiment, the porous ceramic filter layer 6, the secondary filter layer and the ceramic ball 3 cooperate to achieve multi-stage black water filtering. The filtration treatment greatly reduces the wear of pipelines and equipment in subsequent transportation, and also reduces the use of flocculants and other treatment agents in subsequent sewage sedimentation tanks, saving treatment costs. Compared with ordinary filters, this embodiment has the advantages of erosion resistance, corrosion resistance, high pressure resistance, high filtration efficiency, long service life, environmental protection and energy saving, and strong adaptability, and is suitable for promotion and use; after a period of operation, the sewage valve cover can be opened regularly to clean the dirt and impurities accumulated in the central chamber 1, and the porous ceramic filter layer 6, the secondary filter layer and the ceramic ball 3 can also be cleaned, maintained and replaced to ensure normal operation of the equipment.

[0025] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and to design various embodiments with various modifications suitable for specific uses.

Claims

1. A high-pressure filter resistant to heavy medium erosion, characterized in that: It includes a central chamber and an adsorption filter chamber arranged outside the central chamber, the adsorption filter chamber is filled with ceramic balls, the central chamber has an inlet and a sewage outlet, a sewage valve cover is arranged at the sewage outlet, a porous ceramic filter layer and a secondary filter layer are arranged between the central chamber and the adsorption filter chamber, the porous ceramic filter layer has a plurality of conical holes which are small inside and large outside; the adsorption filter chamber is also connected to a plurality of liquid outlet pipes.

2. A high-pressure filter resistant to heavy medium erosion according to claim 1, characterized in that: The secondary filter layer includes multiple layers of fiber cloth.

3. A high-pressure filter resistant to heavy medium erosion according to claim 2, characterized in that: The outer ring of the porous ceramic filter layer has an annular groove, a clamping ring is arranged in the annular groove, and the fiber cloth is tightly fixed by the annular groove and the clamping ring.

4. A high-pressure filter resistant to heavy medium erosion according to claim 3, characterized in that: The fiber cloth is polyester fiber cloth.

5. The high-pressure filter resistant to heavy medium erosion according to claim 3, characterized in that: The clamp ring is made of thermoplastic polyurethane.

6. The high-pressure filter resistant to heavy medium erosion according to claim 1, characterized in that: The inlet end of the liquid outlet pipe is provided with a filter screen.

7. A high-pressure filter resistant to heavy medium erosion according to any one of claims 1 to 6, characterized in that: The central chamber is tubular, the adsorption and filtration chamber is annular and coaxially arranged outside the central chamber, and the multiple liquid outlet pipes are evenly distributed along the circumference of the cross section of the adsorption and filtration chamber.

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